A New Method for Vertical Interpolation of the Mass Field

Gaertner, Miguel Ángel; Castro, Manuel Cabada

doi:10.1175/1520-0493(1996)124<1596:anmfvi>2.0.co;2

Cited by 9 publications

(3 citation statements)

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“…The lateral boundary relaxation zone consists of 10 points. Large-scale values are updated every 6 h. The vertical interpolation of the driving fields to model levels follows the procedure described in Gaertner and Castro (1996). PROMES model uses a split-explicit integration scheme, based on Gadd (1978).…”

Section: Model Descriptionmentioning

confidence: 98%

Future climate extreme events in the Mediterranean simulated by a regional climate model: a first approach

Sánchez

Gallardo

Gaertner

et al. 2004

Global and Planetary Change

288

179

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Section: Model Descriptionmentioning

confidence: 98%

Future climate extreme events in the Mediterranean simulated by a regional climate model: a first approach

Sánchez

Gallardo

Gaertner

et al. 2004

Global and Planetary Change

288

179

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“…The difficulties associated with the vertical interpolation were noted in various previous studies (e.g. Majewski 1985;Shen et al 1986;Gaertner and Castro 1996). The horizontal truncation may also potentially introduce imbalances presumably due to normal mode variations between the NCEP/DOE and the model.…”

Section: Retroactive Forecasts Designmentioning

confidence: 99%

Dynamical Seasonal Climate Prediction Using an Ocean–Atmosphere Coupled Climate Model Developed in Partnership between South Africa and the IRI

et al. 2014

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The resent increase in availability of high-performance computing (HPC) resources in South Africa allowed the development of an Ocean-Atmosphere coupled general circulation model (OAGCM). The ECHAM4.5-MOM3-SA is the first OAGCM to be developed in Africa for seasonal climate prediction. This model employs an initialization strategy that is different from previous versions of the model that coupled the same atmosphere and ocean models. Evaluation of hindcasts performed with the model revealed that the OAGCM is successful in capturing the development and maturity of ElNiño and La-Niña episodes up to 8 months ahead. A model intercomparison also indicated that the ECHAM4.5-MOM3-SA has skill levels for the Niño-3.4 region SST comparable with other coupled models administered by international centres. Further analysis of the coupled model revealed that La-Niña events are more skillfully discriminated than El-Niño events. However, as is typical for OAGCM the model skill was generally found to decay faster during the spring barrier.The analysis also showed that the coupled model has useful skill up to several months lead-time when predicting the equatorial Indian Ocean Dipole (IOD) during the period spanning between the mid austral spring and the start of the summer seasons which reaches its peak in November. The weakness of the model in other seasons was mainly caused by the western segment of the dipole which eventually contaminates the Dipole Mode Index (DMI). The model is also able to forecast the anomalous upper air circulations, particularly in the equatorial belt, and surface air temperature in the southern African region as opposed to precipitation.

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“…For the lateral boundary conditions a Davies-type relaxation scheme (Davies, 1976) is used. Large-scale values are updated every 6 h. The vertical interpolation of the driving fields to model levels follows the procedure described in Gaertner and Castro (1996). The PROMES model uses a split-explicit integration scheme, based on Gadd (1978).…”

Section: Model Descriptionmentioning

confidence: 99%

A modelling case‐study of soil moisture–atmosphere coupling

Gaertner

Domínguez

Garvert³

2010

Quart J Royal Meteoro Soc

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A sensitivity analysis of a moist convection case-study of the 2005 West African monsoon has been performed with the limited-area model PROMES. In the control simulation, soil moisture was initialized based on European Centre for Medium-Range Weather Forecasts (ECMWF) soil moisture. A relatively wet patch appears over an area that was affected later by the passage of a squall line. The control simulation is able to reproduce a squall line that crosses over this wet surface, which makes it possible to analyse the sensitivity of the modelled convective system to a soil moisture increase up to saturation in the cited patch. The wetter land surface in the sensitivity run generates a cooler and moister area in the near-surface atmospheric fields compared to the control run, and the surface wind differences between both runs show a divergent pattern. The humidity and temperature differences follow the diurnal cycle of the monsoon flow, as the cool and moist atmospheric perturbation remains over the wet patch during the afternoon, and moves towards the northeast during the night. There is a clear interaction between the soil moisture perturbation and an approximating African Easterly Wave. This interaction generates larger differences between the two runs on the second simulation day than on the first. The precipitation is reduced over the wet patch in the sensitivity run, but over a larger area a precipitation increase is obtained, reflecting a complex soil moisture-precipitation feedback.

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A New Method for Vertical Interpolation of the Mass Field

Cited by 9 publications

References 0 publications

Future climate extreme events in the Mediterranean simulated by a regional climate model: a first approach

Future climate extreme events in the Mediterranean simulated by a regional climate model: a first approach

Dynamical Seasonal Climate Prediction Using an Ocean–Atmosphere Coupled Climate Model Developed in Partnership between South Africa and the IRI

A modelling case‐study of soil moisture–atmosphere coupling

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